However this is one of a few scientific investigations as sharks keep so many other interesting features and extraordinary abilities that were not investigated by scientists but are discovered day by day.

Sharks as friends

The shark is the only fish able to blink with two eyes simultaneously.

A lot has been written about shark. And such curiosity is probably connected with the fact that sharks are connected with the word "danger". People were always afraid of sharks and after numerous films the fear of sharks turned into real phobia. And some USA doctors even noticed something like the "shark's syndrome". Results, there are Americans that feel the fear of sharks even in the swimming pool not to mention basins and seas.

But if you become diver once you'll understand that all our fears are so big but have no base at all. Sharks are less aggressive than we expect them to be. From the killing machines they often turn into the object of underwater observation. And to see the shark under the water is the dream of many people.

And in such case the main danger is to start to treat the shark thoughtlessly. But the probability to meet the shark nowadays decreases rapidly with the extinction of these animals.

For example, when divers get under the water, sharks will probably leave them alone. And to help it to leave you alone, everything you need to do is to get mixed with the environment. Press yourself to the nearest reef and don't move. The shark may think that you are the part of design. But don't consider it to be too stupid and don't even hope the sharks will take you for the plant or weed.

Number  Left-hander